Combustion chamber heating device



Dec. 14, 1937. M. s. HALL COMBUSTION CHAMBER HEATING DEVICE Filed May 16, 1935 I5 Sheets-Sheet 1 INVENTOR.

M. s .HALL

ATTORNEY.

Dec. 14, 1937. M. s HALL 2,101,903

COMBUSTION CHAMBER HEATING DEVICE Filed May 16, 1935 s Sheets-Sheet 2 INVENTOR.

M. 5. HALL 6&4. Men

ATTORNEY.

Dec. 14, 1937. M, 5 HALL COMBUSTION CHAMBER HEATING DEVICE 5 Sheets-Sheet 5 Filed May 16, 1935 INVENTOR.

M.S.HAL.L

ATTORNEY.

Patented Eco. 14, 1937 UNl'i' ST'EES ar ses ren't oFrieE Mora S. Hall, Baltimore, Md, assignor to May Oil Burner Corporation, a corporation of Maryland Application May 16, 1935, Serial No. 21,885

4 Claims.

This application is a continuation-in-part of my applications Ser. No. 630,543 on Combustion chamber heating device and Ser. No. 737,662 on Boilers.

In the aforesaid applications there are shown quick-heating boilers, of the low pressure type, for household use which are provided with a quick-heating water compartment which forms the fire pot of the boiler and comprises side, rear and bottom hollow wall members. These hollow wall members are provided with a coating of plastic refractory material, the coating being of adequate thickness to absorb heat and to radiate heat back to the flame of the burner and suliiciently thin to transfer heat therethrough to the fluid in the hollow wall members.

Among the objects of this invention is the provision of tubular constructions in lieu of the hollow wall members of the auxiliary quickheating water compartment shown in my said prior applications and thereby accelerating the heating of the fluid in the auxiliary quick-heating water compartment.

A further object of this invention is the provision of tubular constructions whereby better circulation of the water is effected in and through the quick-heating water compartment by multiple passageways in the side, rear and bottom wall portions.

A still further object of this invention consists in means whereby a boiler designed for operation with solid fuel may ,be readily converted into a boiler using fluid fuel, and which by my invention has its heating surface increased.

Other, further and more specific objects of this invention will become readily apparent to persons skilled in the art from a consideration of. the following description when taken in conjunction with the accompanying drawings wherein:

Fig. 1 is a fragmental perspective view of a form of tubular construction of my quick-heating water compartment, formed by two substantially conjugate parts. A portion of the refractory material has been broken away for better illustration of arrangement of tubes.

Fig. 2 is a vertical cross section of the device shown in Fig. 1, taken along line 2-2 of Fig. 1.

Fig.- 3 is a vertical section of. the device shown in Fig. 1, taken along line 33 of Fig. 1, with part of the refractory material broken away.

Fig. 4 is a perspective view of the tubular construction of a modified form of my quick-heating water compartment, and illustrates the use of a water inlet means of manifold construction and integral with the circulating system of the quick-heating water compartment. Here also a portion of the refractory material is broken away, for illustration.

Fig. 5 is a perspective view of the tubular construtcion of another modified form of. my quick-heating water compartment. A portion of the refractory material is broken away, for illustrative purpose.

Fig. 6 is a perspective view of the two members of another modified form of my quick-heating water compartment, before these members are assembled. Portions of the refractory material are broken away to show the arrangement of tubular conduits and manifolds.

Fig. '7 shows the assembled quick-heating water compartment embodying the members illustrated in Fig. 6.

Fig. 8 is a side elevation of a low pressure boiler or house heating boiler illustrating diagrammatically the relation of my quick-heating water compartment to the other parts of they boiler, part of. the device being broken away to show the interior construction.

Fig. 9 is a fragmental sectional view taken along line 9-9 of Fig. 8.

Fig. 10 is a fragmental view, partly in elevation and partly in section, of a hot air heater furnace,

illustrating the disposition of the quick-heating water compartment relative to the other parts of the apparatus.

The device shown in Figs. 1 and 2 is provided with water inlet manifolds l and 2 from which extend the branching conduits 3 and 4, respectively, to the upper, side tubular manifolds 5 and ii, respectively. The water inlet manifolds l and 2 communicate with the bottom, rear manifold l. The tubular conduits 8 extend upwardly from the bottom, rear tubular manifold 1 to the upper, rear manifold 9. This manifold 9 communicates with the manifolds 5 and 6. The manifolds l and 9 are preferably constructed in two parts not connected with each other, but if desired may be made in one piece or in two parts, connected for direct communication with each other. When the manifold 1 is made into two parts not connected with each other, one part forms an L-shaped manifold with manifold I and the other part forms an L-shaped manifold with manifold 2. When the manifold 9 is made in two parts not connected with each other, one part forms an L-shaped manifold with manifold 5 and the other part forms an L-shaped manifold with manifold 6.

The incoming cooler water entering the manifolds l and 2, circulates upwardly through the conduits 3 and 4 to the manifolds 5 and 6, from which it leaves the quick-heating water compartment through the outlets l9. Simultaneous with this, the water is also circulated from the manifolds l and 2 through both parts of the manifold I then upward through the tubular con duits 8 to both parts of the manifold 9, from which it enters the manifolds 5 and 6 wherein it mixes with the water coming from the conduits 3 and 4 and also leaves the quick-heating water compartment through the outlets It).

In the modification shown in Fig. 4, the incoming water is supplied through a single inlet mani fold II which is integral with the tubular conduits l2 and I3 and the lower, rear tubular mani-.

fold l4. Here also, as in the construction shown in Fig. 1, the water circulates from the inlet manifold through the tubular conduits i2 and I3 to the upper, side tubular manifolds l5 and I6, and leaves the quick-heating water compartment through the outlets IT. The circulation of the water is also established from the inlet manifold ll through the lower, rear manifold M, through the upwardly extending tubular conduits I8 to the manifold l9 and to the manifolds l5 and 16 ;where this water mixes with the water coming from'the conduits l2 and I3 and also leaves through the outlets H.

In the modification shown in Fig. 5, circulation from the inlet manifold 20 is effected through the tubular conduits 2| and 22, lower, side manifolds 23 and 24, upwardly extending tubular conduits 25 and 26 to the upper, side manifolds 27 and 28, respectively, and the water leaves the quick-heating water compartment through the outlets 29. In this modification, the arrangement of the lower, rear manifold, its connection to the inlet manifold 20, the upper, rear manifold and the upwardly extending tubular conduits from the lower, rear manifold to the upper, rear manifold is similar to that shown in Fig. 4 and the water circulates through the rear portion of the quickheating water compartment as in Fig. 4. The upper, rear manifold in Fig. 5 is in open communication with manifolds 2'! and 28. The lower, rear manifold may, if desired, be in open communication with the manifolds 23 and 24.

In the modification illustrated in Figs. 6 and 7, the water enters through the inlet manifolds 3i! and 3|, and passes through the tubular conduits 32 and 33, respectively, to the upper manifolds 34 and 35, respectively, and leaves the quick-heating water compartment through the outlets 36.

The two parts of this water compartment are assembled close to each other as shown in Fig. 'I. The quick-heating water compartments in the modifications, heretofore described, are coated or fire faced with plastic refractory material 32', this coating being of adequatethickness to absorb heat and to radiate heat back to the flame of the burner and sufficiently thin to transfer heat therethrough to the fluid in the tubular conduits and manifolds.

The materials employed for making a suitable plastic refractory for use in my boiler may be selected from a wide range of substances commonly employed in the boiler art and which include silicon carbide,- raw fire clay, calcined fire clay, magnesium oxide, chrome ores, mica, talc, quartz, kaolin, diatomaceous and infusorial earths, tripoli, kieselguhr, alundum, fire brick, magnesite, ganister, Portland and hydraulic cements, gypsum, anhydrite, volcanic scoriae, and

slag. Some of these materialsmay be used alone, while all of these substances have been employed in combinations of two or more in various com positions, the proportions being varied to meet the particular needs and fancy of the manufac turer and/or user. These materials are comminuted to the desired size and a suitable binder in liquid form is added to yield a plastic mixture suitable for molding and application as may be desired.

In the specification and claims the term plastic refractory material has reference to a substance prepared from materials, such as described above, and which is plastic during its application and subsequently hardens.

Heat from the flame and the hot gases does not reach the tubular conduits and manifolds directly. Heat is absorbed by this refractory material, which is cemented firmly to the tubular conduits and manifolds.

The tubular conduits are preferably joined to the manifolds by welding, thus forming a good union and an integral structure.

My invention is not restricted to the use of manifolds and tubular conduits of the specific shapes and construction, disclosed herein for purposes of illustration, but includes headers and pipes of the other forms and constructions employed in water and fluid transmission and circulation systems.

The two inlets in the modifications shown in Figs. 1. and 7 are preferably joined into a single inlet (not shown) and the two outlets in these modifications as well as in the modifications shown in Figs. 4 and 5 are also preferably joined into a single outlet (not shown).

When my'invention is applied to a hot water or steam heating boiler, as illustrated in Fig. 8, the quick-heating water compartment 38 is located below the main water compartment 39, the water inlet to the quick-heating water compartment being through the pipe 40. As shown in Fig. 8, water from the main water compartment 39 is returned through the pipe 4| to the auxiliary quick-heating water compartment through inlet pipe 40. If desired, water from a water supply line or from some other source than the main water compartment may be supplied in whole or in part to the quick-heating water compartment. The heated water leaves from the top of the quick-heating Water compartment and passes through the conduit 42 to the main water compartment.

The boiler shown in Figs. 8 and 9 is of the type designed for solid fuel burning but which has been converted into a boiler for fluid fuel burning, the portion 43 serving as the wind pipe of the oil or fluid fuel burner, not shown in the drawings.

When my invention is applied to a hot air heater, as shown in Fig. 10, which has been converted from a solid fuel burner to a fluid fuel burner, the quick-heating water compartment 44 is positioned in the part 45 formerly constituting the ashpit section of the heater, the water entering through the pipe 46 and discharging through the pipe 41. In this construction, 48 represents the wind pipe of an oil burner (not shown in the drawings). In hot air heaters, whether originally constructed as a fluid fuel burner and provided with my auxiliary quickheating water compartment or converted from a heater originally made for solid fuel burning, as shown in Fig. 10, the inlet pipe 46 may be connected directly with a water supply line and the outlet to a hot water storage tank. Also, the

inlet may, if desired, be auxiliary hot water the connected with an heating system return and outlet to the hot water heating system, the hot water heating system under these condi ns serving as auxiliary to the hot air system.

Heat from the combustion of the fuel is absorbed by the refractory material and conducted to the water in the hollow tubular members of u 'liary qui k-heating water compartment.

Inbers are filled with water which absorbs the heat and a rapid circulation is started. By this means, the heat absorbed by the refractory is used in heating the return water and increases the economy of operation. With a construction as shown in Fig. 8, the rapid circulation of water through the auxiliary quick-heating water compartment and thence into the main water compartment materially shortens the time required to bring the boiler up to full load conditions.

In the several illustrations heretofore shown and described, the plastic refractory fire facing material is held in position by interlocking in its plastic state with the metal tubular portions. However, this plastic refractory material may be held in by anchors or bolts.

Molded blocks, made of fire clay mixtures and baked, may be and may be held in place by bolts or ties constructing them so as to interlock. A gas burning heater may be adapted for employment with my quick-heating combustion chamber by the use of a luminous flame burner, the flame of which is projected into my refractory-lined fire pot.

My new quick-heating water compartment may be advantageously employed with continuously burning and other liquid or gaseous fuel burners and especially with automatically controlled, intermittently operated burners; that is, with burners in which the flame burns intermittently under control of automatic regulating devices which cause it to burn and to cease burning as called for by such control devices. With my new construction there is effected a reduction of radiation losses through the walls as well as the heat losses to the ground beneath incident to other types of combustion chamber or fire pot.

The present invention is not limited to the specific details set forth in the foregoing examples which should be construed as illustrative and not by way of limitation, and in view of the numerous modifications which may be effected therein without departing from the spirit and scope of this invention, it is desired that only such limitations be imposed as are indicated the appended claims.

I claim as my invention:

1. In a house heating boiler, a quick-heating water compartment forming the fire pot of the boiler, said fire pot being closed at the rear end and open at the top, said quick-heating water compartment being formed of a plurality of sections wherein each section has its individum fluid circulating system, and said quick-heating water compartment comp-rising water inlet means at the bottomthereof, a lower, rear tubular manifold communicating with said water inlet means, an upper, rear tubular manifold, a plurality of tubular conduits extending from said lower, rear manifold to said upper, rear manifold and disposed to deliver water from said lower, rear manifold to said upper, rear manifold, an upper, side tubular manifold, a plurality of tubular conduitsextending from said inlet means and communicating directly with said upper, side manifold and disposed to deliver water in continuous direct upward flow from said inlet means to said upper, side manifold, each of said latter tubular conduits forming a part of the bottom and a side of said water compartment, and refractory material upon said manifolds and said tubular conduits, said refractory material forming the inner fire facing for said water compartment.

2. In a house heating boiler, a quick-heating water compartment forming the fire pot of the boiler, said fire pot being closed at the rear end and open at the top, said quick-heating water compartment being formed of a plurality of sections wherein each section has its individual fluid circulating system, and said quick-heating water compartment comprising water inlet means at the bottom thereof, a lower, rear tubular manifold communicating with said water inlet means, an upper, rear tubular manifold, a plurality of tubular conduits extending from said lower, rear manifold to said upper, rear manifold and disposed to deliver water from said lower, rear manifold to said upper, rear manifold, an upper, side tubular manifold, a plurality of tubular conduits extending from said inlet means and communicating with said upper, side manifold and disposed to deliver water from said inlet means to said upper, side manifold, each of said latter tubular conduits forming a part of the bottom and a side of said water compartment, and refractory material upon said manifolds and said tubular conduits, said refractory material forming the inner fire facing for said water compartment.

3. In a house heating boiler, a quick-heating water compartment forming the fire pot of the boiler, said fire pot being closed at the rear end and open at the top, said quick-heating water compartment being formed of a plurality of sections wherein each section has its individual fluid circulating system, and said quick-heating water compartment comprising water inlet means at the bottom thereof, a lower, rear tubular manifold communicating with said water inlet means, an upper, rear tubular manifold, a plurality of tubular conduits extending from said lower, rear manifold to said upper, rear manifold and disposed to deliver water from said lower, rear manifold to said upper, rear manifold, an upper, side tubular manifold communicating with said upper, rear manifold, a plurality of tubular conduits extending from said inlet means and communicating with said upper, side manifold and disposed to deliver water from said inlet means to said upper, side tubular manifold, a plurality of tubular conduits extending from said inlet means and communieating with said latter upper, side manifold and disposed to deliver water from said inlet means to said latter upper, side manifold, and refractory material upon said manifolds and said tubular conduits, said refractory material forming the inner fire facing for said water compartment.

4. In a house heating boiler, a quick-heating water compartment forming the fire pot of the boiler, said fire pot being closed at the rear end and open at the top, said quick-heating water compartment being formed of a plurality of sections wherein each section has its individual fiui-d circulating system, and said quick-heating water compartment comprising water inlet means at the bottom thereof, a lower, rear tubular manifold communicating with said water inlet means,

manifold, another upper, side extending from said inlet means and communicating with said latter upper, side manifold and disposed to deliver water from said inlet means to said latter upper, side manifold, each of said latter tubular conduits forming a part of the bottom and a side of said water compartment, and refractory material upon said manifolds and said tubular conduits, said refractory material forming the inner fire facing for said water compartment.

MORA S. HALL. 

